Department of Chemistry, Renmin University of China, Beijing, People's Republic of China.
Nanotechnology. 2012 Mar 2;23(8):085401. doi: 10.1088/0957-4484/23/8/085401. Epub 2012 Feb 1.
We report a giant Seebeck coefficient (S) thermoelectric (TE) material-MnO(2) powder-and the design of a practical MnO(2) TE generator to light up a regular light emitting diode (LED). The S of MnO(2) powder was measured to be higher than 20,000 μV K(-1), which is about 100 times higher than the state-of-the-art of Bi(2)Te(3), one of the best TE materials. The giant S is very possibly closely related to the surface density of the electronic state (DOS), the Fermi energy level. The very high S and therefore high power factor is technologically important for transient TE cooling.
我们报告了一种 Seebeck 系数（S）巨大的热电（TE）材料-MnO(2) 粉末-以及实用的 MnO(2) TE 发电机的设计，可点亮普通发光二极管（LED）。MnO(2) 粉末的 S 被测量为高于 20000 μV K(-1)，这大约是最先进的 Bi(2)Te(3)的 100 倍，Bi(2)Te(3)是最好的 TE 材料之一。巨大的 S 很可能与电子态（DOS）、费米能级的表面密度密切相关。非常高的 S 因此高功率因数对于瞬态 TE 冷却技术很重要。
